nonsymmetric dynamics

print hierarchy
[int] Print operators in the multigrid hierarchy.
If -1, print all operators (A’s, P ’s and R’s). If
0 or greater, print only the operators associated
with that level. In the latter case, only the grid
transfer operators that transfer information to
the next coarser level will be printed. Default:
-2.
6.4.4 Multigrid Cycle Options
cycle applications
[int] Number of multigrid applications within
a preconditioner Default: 1.
max levels [int] Maximum number of levels. Default: 10.
increasing or decreasing
[string] If set to increasing, level 0 will correspond
to the finest level. If set to decreasing,
max levels - 1 will correspond to the finest
level. Default: increasing.
prec type [string] Multigrid cycle type.
Possible values: MGV, MGW,
full-MGV, one-level-postsmoothing,
two-level-additive, two-level-hybrid,
two-level-hybrid2, projected MGV. Default:
MGV.
projected modes
number of projected modes
[double**] Array of double vectors containing
modes that should be projected out before and
after the AMG V-cycle is applied. For use with
the projected MGV option. Default: NULL.
[int] Number of modes that are to be projected
out before and after the AMG V-cycle is applied.
For use with the projected MGV option.
Possible values: 1,2, or 3. Default: 0.
6.4.5 Aggregation and Prolongator Parameters
aggregation: type ⋆ [string] Define the aggregation scheme. See
Table 3. Default: Uncoupled.
aggregation: threshold [double] Dropping threshold in aggregation.
Default: 0.0.
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